# ASB No. EC225-05A030

Revision 0 2012-07-12 Page 1/20

This document is available on the internet: www.eurocopter.com/techpub 

### Civil version(s): LP



# ALERT SERVICE BULLETIN

SUBJECT: TIME LIMITS – MAINTENANC E CHECKS – Main rotor mast assembly

Inspection of the swashplate sub-assembly

ATA: 62



### Revision number Date of issue

Revision 0 2012-07-12



### Summary:

Following the reporting of corrosion on the seating faces of the swashplate bearing retaining flanges, the present ALERT SERVICE BULLETIN introduces an insp ection of the swashplate sub-assembly.



### Application:

EUROCOPTER specifies that compliance with this ALERT SERVICE BULLETIN is mandatory. For the attention of

# ASB No. EC225-05A030

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### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A.1. Helicopters/Installed equipment

On Main Rotor Mast assembly:

- Fitted with a rotating swashplate, Part No . (MP/N) 332A31-3074-00 or 332A31-3076-00

and - Fitted with a stationary swashplate, Part No. (MP/N) 332A31-3079-00 or 332A31-3079-01

and - One of whose two swashplates (rotating or stationary ) is more than two years old since new or since the

last repair in a D-level approved maintenance center (see Log Card).



### NOTE 1

Refer to the Log Cards (FM) to identify the actual configuration of the helicopter.



### NOTE 2

For swashplate sub-assemblies that are less than two years old since new or since repair in a D-level approved maintenance center (see Log Card), this ALERT SERVICE BULLETIN will be applicable when reaching two years.

1.A.2. Non-installed equipment

On Main Rotor Mast assembly:

- Fitted with a rotating swashplate, Part No . (MP/N) 332A31-3074-00 or 332A31-3076-00

and - Fitted with a stationary swashplate, Part No. (MP/N) 332A31-3079-00 or 332A31-3079-01,

and - One of whose two swashplates (rotating or stationary) is more than two years ol d since new or since last

repair in a D-level approved maintenance center (see Log Card).



### NOTE 3

Refer to the Log Cards (FM) to identify the actual configuration of the helicopter.



### NOTE 4

For swashplate sub-assemblies that are less than two years old since new or since repair in a D-level maintenance center (see Log Card), this ALERT SERVICE BULLETIN will be applicable when reaching two years.

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### 1.B. ASSOCIATED REQUIREMENTS

Not applicable.



### 1.C. REASON

When reconditioning Main Rotor Mast assemblies, EUROCOPTER recently identified the presence of corrosion on the rotating and stationary swashplates, located under the retaining flanges of the bearing of the swashplate sub-assembly. As this corrosion, in time, could re sult in the initiation of a crack, EU ROCOPTER makes compliance with this ALERT SERVICE BULLETIN mandatory.

Additionally, EUROCOPTER hereby informs you of the in troduction of modification 07 43728 which improves the anti-corrosion protection of the rotating and statio nary swashplates, as well as extending the service life of the stationary swashplate following embodiment of modification 07 43728.

This modification is embodied on a routine basis in the ev ent of the return of the Main Rotor Mast assembly to a D-level approved repair station. Following embodiment of this modification, the swas hplates change part number and are therefore no longer subject to compliance with this ALERT SERVICE BULLETIN:

MP/N pre MOD 07 43728 (subject to this ALERT SERVICE BULLETIN) MP/N post MOD 07 43728 (not subject to this ALERT

SERVICE BULLETIN)

Rotating swashplate 332A31-3074-00

332A31-3076-00 332A31-3074-01

Stationary swashplate 332A31-3079-00

332A31-3079-01 332A31-3079-02

Moreover, only those swashplate sub-assemblies which are more than 2 years old since new or the last repair are concerned by the supplementary mainte nance actions specified in paragraph 1.E.2. If the swashplate sub-assembly has been disassembled in a D-level approved repair station (for example, to replace a stationary swashplate on reaching its servic e life limit), the rotating a nd stationary swashplates will have been inspecte d for corrosion. Consequently, it is possible to wait 2 years after asse mbly before checking the ab sence of corrosion on the swashplates.



### 1.D. DESCRIPTION

Compliance with this ALERT SERVICE BULLETIN c onsists in inspecting the rotating and stationary swashplates and, if necessary, in sending the main rotor mast assembly for reconditioning of its swashplate sub-assembly and embodiment of modifi cation 07 43728 during the reconditioning operation.



### 1.E. COMPLIANCE

EUROCOPTER specifies that compliance with this ALERT SERVICE BULLETIN is mandatory.

1.E.1. Compliance at the works

Not applicable.

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This document is available on the internet: www.eurocopter.com/techpub 1.E.2. Compliance in operation

The work is to be performed by the operator on helicopters and on uninstalled equipment.

Helicopters/Installed equipment:

For the Main Rotor Mast assemblies listed in paragraph 1.A.1

- For main rotor mast assemblies equipped with swashplates having logged less than 1210 flying

hours since new or since the last repair of the swashplate sub-assembly in a D-level approved maintenance center (see the log card):



### NOTE 5

For helicopters involved in water-bombing missions EUROCOPTER points out the corrective coefficient factors described in chapter 5.99 of the Maintenance Program: - Rotating swashplate MP/N 332A31-3076-00: 1.75, - Stationary swashplate MP /N 332A31-3074-00: 2.4.



### NOTE 6

For helicopters operating in very cold weather conditions, EUROCOPTER points out the corrective multiplication factors described in chapter 5.99 of the Maintenance Program: - Rotating swashplate Part No.332A31-3076-00: 3.6, - Rotating swashplate Part No.332A31-3074-00: 3.7, - Stationary swashplate Part No.332A31-3079-00: 2.1, - Stationary swashplate Part No.332A31-3079-01: 2.1.

. Apply paragraphs 3.B.1. to 3.B.4. of this AL ERT SERVICE BULLETIN no later than when a total

of 1320 flying hours has been achieved.

Then,

. Apply paragraphs 3.B.1. to 3.B.4. every 1320 flying hour s for a visual inspection of the swashplates to

check the absence of corrosion and cracking on the swashplates.

# ASB No. EC225-05A030

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This document is available on the internet: www.eurocopter.com/techpub If corrosion is found without any visual indication of cracking:

- For helicopters operating in very cold weather condi tions (outside air temperature (OAT) below -30°C): . before the next flight and pending application of paragr aph 3.B.5. (replacement of the main rotor mast

assembly) affix a locally made label to the instrume nt panel prohibiting flight in very cold weather conditions (OAT below -30°C), . within 150 flying hours or 6 months (the first limit reached is applicable) following discovery of the

corrosion, apply paragraph 3.B.5 (replacem ent of the main rotor mast assembly).

- For helicopters not operating in very cold weather conditions: . within 150 flying hours or 6 months (the first limit reached is applicable) following discovery of the

corrosion, apply paragraph 3.B.5 (replacem ent of the main rotor mast assembly).

In the event of a visual indication of a crack, apply paragraph 3.B.5. (replacement of the main rotor mast assembly) before resuming flights.

- For main rotor mast assemblies equipped with swashplates having logged 1210 flying hours or

more since new or since the last repair of the swashplate sub-assembly in a D-level approved maintenance center (see the log card):



### NOTE 7

For helicopters involved in water-bombing missions EUROCOPTER points out the corre ctive multiplication factors described in chapter 5.99 of the Maintenance Program: - Rotating swashplate MP/N 332A31-3076-00: 1.75, - Rotating swashplate MP/N 332A31-3074-00: 2.4



### NOTE 8

For helicopters operating in very cold weather conditions, EUROCOPTER points out the corre ctive multiplication factors described in chapter 5.99 of the Maintenance Program: - Rotating swashplate MP/N 332A31-3076-00: 3.6, - Rotating swashplate MP/N 332A31-3074-00: 3.7, - Stationary swashplate MP /N 332A31-3079-00: 2.1, - Stationary swashplate MP /N 332A31-3079-01: 2.1.

. Apply paragraphs 3.B.1. to 3.B.4. of this ALER T SERVICE BULLETIN within 110 flying hours following

receipt of this ALERT SERVICE BULLETIN, issued on the date indicated at the bottom of the page.

Then,

. Apply paragraphs 3.B.1. to 3.B.4. of this AL ERT SERVICE BULLETIN every 1320 flying hours to

visually check the absence of corr osion and cracking on the swashplates.

# ASB No. EC225-05A030

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This document is available on the internet: www.eurocopter.com/techpub If corrosion is found without any visual indication of cracking:

- For helicopters operating in very cold weather condi tions (outside air temperature (OAT) below -30°C): . before the next flight and pending application of paragr aph 3.B.5. (replacement of the main rotor mast

assembly) affix a locally made label to the instrume nt panel prohibiting flight in very cold weather conditions (OAT below -30°C), . within 150 flying hours or 6 months (the first limit reached is applicable) following discovery of the

corrosion, apply paragraph 3.B.5 (replacem ent of the main rotor mast assembly).

- For helicopters not operating in very cold weather conditions: . within 150 flying hours or 6 months (the first limit reached is applicable) following discovery of the

corrosion, apply paragraph 3.B.5 (replacem ent of the main rotor mast assembly).

In the event of visual indication of a crack, apply par agraph 3.B.5. (replacement of the main rotor mast assembly) before resuming flights.



### NOTE 9

Reminder of the general instructions in the PRE: the date to

be considered is the date of the first installation or the first removal from storage as recorded on the log card.

Non-installed equipment:

- For the main rotor mast assemblies listed in paragraph 1.A.1:

. Apply paragraph 3.B.6. of the present ALERT SERVI CE BULLETIN before installation on the helicopter.



### NOTE 10

Reminder of the general instructions in the PRE: the date to

be considered is the date of the first installation or the first removal from storage as recorded on the log card.



### 1.F. APPROVAL

Approval of modifications:

Not applicable.

Approval of this document:

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved on July 11, 2012 under the authority of EASA Design Organization Approv al No. 21J.056 fo r helicopters of civil versions subject to an Airworthiness Certificate.

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved on July 11, 2012 under the prerogatives of t he recognition of design capabilit y FRA21J-002-DGA for French Government helicopters.

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### 1.G. MANPOWER

EUROCOPTER recommends that compliance with this ALERT SERVICE BULL ETIN is ensured by personnel qualified as follows:

Qualification: about 2 Mechanical Engineering Technicians.

The time for the operations is given for information purposes, for a standard configuration.

Time for the operations: approximately 4 hours for 2 Me chanical Engineering Technicians to inspect the swashplates.



### 1.H. WEIGHT AND BALANCE

Not applicable.



### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT STATE

Not applicable.



### 1.K. REFERENCES

The following documents are required for compliance with this ALERT SERVICE BULLETIN.

MMA: 62-00-00-611: Main Rotor - Routine servicin g instructions

MMA: 62-10-00-061: Main rotor blades - Removal - Installation MMA: 62-20-00-021: Main Rotor Mast assembly - Removal MMA: 62-20-00-421: Main Rotor Mast assembly - Installation MMA: 62-20-00-621: Main Rotor Mast - Storage MMA: 62-20-00-361: Main Rotor Mast - Removal from storage

MTC: 20.01.01.301: Use of greases MTC: 20.02.05.404: Standard practi ces - Joining by bolts and nuts MTC: 20.02.06.402: Standard practi ces - Safetying with lockwire MTC: 20.04.01.401: Standard practice s - Cleaning of mechanical parts MTC: 20.05.01.222: Standard practices - Application of PR 1771 B2 sealant



### 1.L. DOCUMENTS AFFECTED

Not applicable.



### 1.M. INTERCHANGEABILITY OR MIXABILITY OF PARTS

Not applicable.

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### 2. MATERIAL INFORMATION

2.A. MATERIAL : PRICE - AVAILABILITY - PROCUREMENT

Price

For any information concerning the kits and/or comp onents, contact the EUROCOPTER Network Sales and Customer Relations Department.

Availability

The kits and/or components will be supplied on customer’s order.

Procurement procedure

Order as required (unless specified otherwise)

from

EUROCOPTER Etablissement de Marignane Direction Ventes et Relations Client (ECR)

13725 MARIGNANE CEDEX

FRANCE



### NOTE 1

On the purchase order, please always specify the mode of transport, the destination and the serial numbers of the helicopters to be modified.



### NOTE 2

For ALERT SERVICE BULLETINS, order by:

Telex: HELICOP 410 969F Fax: +33 (0)4.42.85.99.96.



### 2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONENT

Kits or components to be ordered for one helicopter or one assembly:

Designation Qty New part number Item Old part number Instruction

Nut 30 ASN52320BH080N 1 / /

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This document is available on the internet: www.eurocopter.com/techpub Products to be ordered separately:

In accordance with the Work Cards and Tasks quot ed in the present ALERT SERVICE BULLETIN and listed

below:

Designation Qty Material reference CM Item

Lockwire A/R EN3628-080 CM776 2

Mastinox A/R 6856K CM518 3

Grease A/R G354 CM115 4 Sealing compound A/R PR1771-B2 CM6068 5

These products may be ordered separately fr om INTERTURBINE AVIATION LOGISTICS.

Internet address: http://www.interturbine.com Telephone: +49.41.91.809.300

AOG: +49.41.91.809.444

Material required for non-installed components:

Order as required the materials listed in paragraph 2.C. Kits and/or components to be ordered for one helicopter or for one Main Rotor Mast assembly.



### 2.D. MATERIAL TO BE RETURNED

Return the Main Rotor Mast assembly in accor dance with the procedure described in Service Letter 1567-00-02 specifying on the documents "Ret urned following compliance with ALERT SERVICE

BULLETIN 05A030".

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### 3. ACCOMPLISHMENT INSTRUCTIONS

3.A. GENERAL

- Read and apply the instructions on the use of grease s, in accordance with MTC Work Card 20.01.01.301 - Read and apply the instructions on joining by bolts and nuts, in accordance with MTC Work

Card 20.02.05.404.



### NOTE 1

The tightening torque of the screws (f), (Figures 1 and 2) and the nuts (1), (Figure 2) includes the correction factor for the grease (4) (correct ion factor = 0.50).

- Read and apply the instructions on safetying with lockwire, in accordance with MTC Work

Card 20.02.06.402. - Read and apply the instructions on cleaning of mechanical parts, in accordance with MTC Work

Card 20.04.01.401. - Read and apply the routine servicing instructio ns in accordance with MMA Task 62-00-00-611.

- The procedure described in paragraph 3.B.2. differentiates between swashplates and those which do not

have modification 07 43705 embodied.



### NOTE 2

The embodiment of modification 07 43705 consists in changing the material and the design of the swashplates.

MP/N pre-MOD 07 43705 MP/N post MOD 07 43705

Rotating swashplate 332A31-3076-00 332A31-3074-00

Stationary swashplate 332A31-3079-00 332A31-3079-01



### 3.B. OPERATIONAL PROCEDURE

3.B.1. Preliminary steps

- Install access equipment. - Open the sliding cowling. - Open the engine cowlings. - Install the engine cowling working platform.

- Remove the main rotor blades in accordance with MMA Task 62-10-00-061.

3.B.2. Removal of the stationary and rotating swashplate bearing retaining flanges

3.B.2.a. Removal of the stationary swas hplate bearing flange (d), (Figure 1 and 2)

- Using a spatula, remove the seal from the insi de edge of the stationary swashplate bearing flange (d),

(Figures 1 and 2),



### CAUTION

BEFORE REMOVING THE BEARING FLANGES FROM THE STATIONARY (d) AND ROTATING (a) SWASHPLATES, IDENTIFY THE POSITION OF THE

FLANGES RELATIVE TO THEIR RESPECTIVE -

SWASHPLATE.

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This document is available on the internet: www.eurocopter.com/techpub - Remove and discard the lockwire from the screws (f) of the stationary swashplate bearing flange (d), - Remove the screws (f) and washers (e), - Remove the stationary swashplate bearing flange (d).



### NOTE 3

To facilitate removal of the rotating swashplate bearing flange (a), the stationary swashplate flange (d) may remain attached and suspended (for example using lockwire or binding clamps) to the rotating scissors on the rotor mast.

3.B.2.b. Removal of the rotating swashplate bearing flange (a), (Figure 1)

- For helicopters equipped with swashplates which do not have modification 07 43705 embodied

(Figure 1):

. Use a spatula to remove the seal from the outer edge of the rotating swashplate bearing flange (a).

. Remove and discard the lockwire from the screws (f) of the rotating swashplate bearing flange (a). . Remove the screws (f) and the washers (e). . Remove the rotating swashplate bearing flange (a).

- For helicopters equipped with swashplates which have modification 07 43705 embodied (Figure 2):

. Use a spatula to remove the seal from the outer edge of the rotating swashplate bearing flange (a).

. Remove and discard the lockwire from the bolts (k) of the rotating swashplate bearing flange (a). . Remove the nuts (h) and the washers (j). . Remove the bolts (k) and the washers (j). . Remove the rotating swashplate bearing flange (a).



### NOTE 4

To facilitate inspection for the absence of corrosion or cracking of the rotating and stationary swashplates, the rotating swashplate bearing flange (a), may remain attached and suspended (for example using lockwire or binding clamps) to the rotating scissors of the rotor mast.

3.B.3. Check of the absence of corrosion and cracking

- Using a dry cloth, clean the zones to be inspec ted on the rotating swashplate (b) and the stationary

swashplate (c), (Figure 3).



### CAUTION

THE USE OF PENETRANT DYES TO CHECK THE

ABSENCE OF CRACKS ON THE SURFACES OF THE

STATIONARY AND ROTATING SWASHPLATES IS

PROHIBITED

- Inspect visually to check the absence of corrosion and cracking (using a magnifying glass for example) on

the surface of the rotating swashplate (b) and the stationary swashplate (c).

# ASB No. EC225-05A030

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This document is available on the internet: www.eurocopter.com/techpub Interpretation of the results:

- If no corrosion and no cracks are found:

. Install the bearing flanges in accordance with paragraph 3.B.4. . Resume flights.

- If corrosion is found with no visual signs of cracking:

. Install the bearing flanges in accordance with paragraph 3.B.4. . Replace the main rotor mast assembly in accordan ce with paragraph 3.B.5. in accordance with the

instructions in paragraph 1.E.2. . Return the Main Rotor Mast assembly in accordance with paragraph 2.D.

- If cracking is found:

. Install the bearing flanges in accordance with paragraph 3.B.4. . Replace the main rotor mast assembly in accordan ce with paragraph 3.B.5. before resuming flights. . Return the Main Rotor Mast assembly in accordance with paragraph 2.D.

3.B.4. Installation of the stationar y and rotating swashplate bearing flanges

3.B.4.a. Installation of the rotating swashpla te bearing flange (a), (Figures 1, 2, 4 and 5)

- For helicopters equipped with swashplates which do not have modification 07 43705 embodied

(Figure 1):

. Apply Mastinox (3) to the rotating swashplate bearing flange (a), (Figure 1).



### CAUTION

ENSURE CORRECT POSITION ING OF THE ROTATING

SWASHPLATE BEARING FLA NGE RELATIVE TO THE SPIGOTS ON THE SWASHPLATE BEARING (FIGURE 5).

. Position the rotating swashplate bearing flange (a). . Apply Mastinox (3) to the washers (e). . Position the washers (e). . Using grease (4) lubricate t he threads of the screws (f). . Position the screws (f).



### CAUTION

WHEN TORQUE-TIGHTENING THE ATTACHMENT SCREWS (f) ON THE ROTATING SWASHPLATE BEARING FLANGE (a) COMPLY WITH THE TIGHTENING
SEQUENCE INDICATED IN FIGURE 4.

. Tighten the screws (f) to the torque indicated in Figure 1 (cf. NOTE 1 paragraph 3). . Using lockwire (2), safety the attachment screws (f) of the rotating swashplate bearing flange (a). . Lubricate the seal (g), (Figure 1) with grease (4). . Apply a bead of sealing compound (5) to the external edge of the rotating swashplate bearing

flange (a) in accordance with MTC Work Card 20.05.01.222.

- For helicopters equipped with swashplates which have modification 07 43705 embodied (Figure 2):

. Apply Mastinox (3) to the rotating swashplate bearing flange (a) (Figure 2).

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### CAUTION

ENSURE CORRECT POSITION ING OF THE SPIGOTS ON THE ROTATING SWASHPLATE BEARING FLANGE (a)

RELATIVE TO THE SPIGOTS ON THE SWASHPLATE BEARING (FIGURE 5).

. Position the rotating swashplate bearing flange (a) (Figure 2). . Apply Mastinox (3) to the washers (j) and the bolts (k). . Position the washers (j) and the bolts (k). . Apply Mastinox (3) to the washers (j). . Using grease (4) lubricate the threads of the nuts (1). . Position the nuts (1).



### CAUTION

WHEN TORQUE-TIGHTENING THE ATTACHMENT NUTS (1) ON THE ROTATING SWASHPLATE BEARING FLANGE (a) COMPLY WITH THE TIGHTENING
SEQUENCE INDICATED IN FIGURE 4.

. Tighten the nuts (1) to the torque indicat ed in Figure 2 (cf. NOTE 1 paragraph 3).



### NOTE 5

The procedure for measuring the locking torque of the nuts (1) is indicated in MTC Work Card 20.02.05.404.

. Using lockwire (2) safety the attachment bolts (k) of the rotating swashplate bearing flange (a).



### NOTE 6

The holes in the bolt heads (k) must be orientated such that the lockwire (2) is always in tension between the bolts (k).

. Lubricate the seal (g), with grease (4). . Apply a bead of sealing compound (5) to the external edge of the rotating swashplate bearing

flange (a) in accordance with MTC Work Card 20.05.01.222.

3.B.4.b. Installation of the stationary swashpl ate bearing flange (d), (Figures 1, 2, 4 and 5)

- Apply Mastinox (3) to the stationary swashp late bearing flange (d), (Figures 1 and 2).

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### CAUTION

NOTE THE POSITIONING OF THE SPIGOTS ON THE

STATIONARY SWASHPLATE BEARING FLANGE

RELATIVE TO THE SPIGOTS ON THE SWASHPLATE BEARING (FIGURE 5).



### CAUTION

IN ORDER TO AVOID DAMAGING THE SEAL (g)

DURING INSTALLATION OF THE STATIONARY SWASHPLATE BEARING FLANGE (d), THE LATTER SHOULD BE INTRODUCED INCLINED, AND NOT FLAT.

- Introduce the stationary swashplate bearing flange (d).



### NOTE 7

After installing the attachment screw (f) finger-tight in position No. 1 (m), (Figure 4), a rotary motion of the rotor mast assembly whilst exerting a pressure from the top downwards on the stationary swashplate bearing flange (d) opposite to position No. 1 (m) will facilitate its installation.

- Position the stationary sw ashplate bearing flange (d). - Position the washers (e), (Figures 1 and 2).



### CAUTION

WHEN TORQUE-TIGHTENING THE ATTACHMENT SCREWS (f) ON THE STATIONARY SWASHPLATE BEARING FLANGE (d) COMPLY WITH THE TIGHTENING
SEQUENCE INDICATED IN FIGURE 4.

- Using grease (4) lubricate the thread s of the screws (f), (Figures 1 and 2). - Position the screws (f). - Tighten the screws (f) to the torque indicated in Figures 1 and 2 (cf. NOTE 1, paragraph 3). - Using lockwire (2), safety the attachment screws (f) of the stationary sw ashplate bearing flange (d). - Apply a bead of sealing compound (5) to the inner edge of the stationary swashplate bearing flange (d)

in accordance with MTC Work Card 20.05.01.222.

3.B.5. Replacement of the main rotor mast assembly

- Remove the main rotor mast assembly in ac cordance with Task 62-20-00-221 of the AMM. - Install a new main rotor mast assembly in accordance with Task 62-20-00-421 of the AMM.

3.B.6. Operational procedure for non-installed equipment

- De-store the Main Rotor mast assembly in accordance with MMA Task 62-20-00-631. - Apply paragraphs 3.B.2., 3.B.3 et 3.B.4. - Store the Main Rotor mast assembly in accordance with MMA Task 62-20-00-621.

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This document is available on the internet: www.eurocopter.com/techpub 3.B.7. Final steps

- Install the main rotor blades in ac cordance with MMA Task 62-10-00-061. - Remove the engine cowling working platform. - Close the engine cowlings. - Close the sliding cowling. - Remove the access equipment.



### 3.C. IDENTIFICATION

Identification of this document:

Record compliance with this ALERT SERVICE BULL ETIN with the revision number on the Log Card.



### 3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.

# ASB No. EC225-05A030

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This document is available on the internet: www.eurocopter.com/techpub Figure 1: Rotating swashplates pre-modification 07 43705 a
d

b

c

d

3 a 3 e f

2

4

e

b

c G 354

g
4 f

2

4

5

5 G 354

1

, 3

– 1

, 7

115

– 150.5 G 354

1

, 3

– 1

, 7

115

– 150.5

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This document is available on the internet: www.eurocopter.com/techpub Figure 2: Rotating swashplates post modification 07 43705 a d

b c

e

d f

2

4

k

2

3 j

3 a 3 j h

1

4

b

c g 4 G 354

5 5 G 354

1

, 3

– 1

, 7

115

– 150.5 G 354

0

, 65

– 0

, 8

57.5

– 71

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This document is available on the internet: www.eurocopter.com/techpub Figure 3: Zone to be inspected on the rotating and stationary swashplates zone to be inspected c

b

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This document is available on the internet: www.eurocopter.com/techpub Figure 4: Torque tightening sequence for the attachment bolts d c b a

f

m

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This document is available on the internet: www.eurocopter.com/techpub Figure 5: Locating spigots